package com.example.yangyang.sharedpreferencestest125yy;

import android.content.SharedPreferences;
import android.support.annotation.BoolRes;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private Button button;
    private EditText etname,etpass;
    private Switch sw;
    private String username="",password="";//用户名密码
    private SharedPreferences sp;//简单存储对象
    private View.OnClickListener listener=new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            switch (view.getId())
            {
                case R.id.btnlogin:
                    //登录按钮操作
                    username=etname.getText().toString();
                    password=etpass.getText().toString();
                    if(username.equals("123")&& password.equals("123")){
                        Toast.makeText(MainActivity.this,"登录成功",Toast.LENGTH_SHORT).show();
                              //  if(sw.isChecked())//如果记住密码
                                //{
                                  //  saveSP();//存储信息
                                //}
                    }
                    break;
            }
        }
    };
//保存sharedPreferences
    private void saveSP() {

            SharedPreferences.Editor editor=sp.edit();
            editor.putString("username",username);
            editor.putString("password",password);
            editor.putBoolean("remember",sw.isChecked());
            editor.commit();//提交保存
        }



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
        //获取sp对象
        sp=getSharedPreferences("login",MODE_PRIVATE);

                //读取存储信息
        readSP();
    }
//读取简单存储信息
    private void readSP() {
        String  name=sp.getString("username",null);
String pass=sp.getString("password",null);
        Boolean b=sp.getBoolean("remember",false);
        if(b)
        {
            etname.setText(name);
            etpass.setText(pass);
            sw.setChecked(b);
        }

    }

    private void init() {
        button=(Button)findViewById(R.id.btnlogin);
        etname=(EditText)findViewById(R.id.editText);
        etpass=(EditText)findViewById(R.id.editText2);
        sw=(Switch) findViewById(R.id.switch1);
        button.setOnClickListener(listener);
    }


}

